Spin-phonon interaction and band effects in the high-Tc superconductor HgBa2CuO4
T. Jarlborg
DOI 10.1103/PhysRevB.68.172501 · Physical Review B
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Abstract
Band calculations show that a stripelike antiferromagnetic spin wave is enforced by a “half-breathing” phonon distortion within the CuO plane of HgBa2CuO4. This spin-phonon coupling is increased further by shear distortion and by the increased distance between Cu and apical oxygens. The effects from spin-phonon coupling are consistent with many observations in high-Tc materials. Spin-phonon coupling can be important for the mechanism of spin fluctuations and superconductivity, although the effects are quantitatively weak when using the local density potential.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| HgBa2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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